* feat(evmutil): add ERC20KavaWrappedNativeCoinContract
* adds the contract ABI & bytecode for an Ownable erc20 with the following:
* customizable decimals on deploy -> requires overriding decimals() view
* mint() exposed for the contract owner which will be the evmutil module
* burn() exposed for the contract owner which will be the evmutil module
* sets up keeper to deploy above token based on details from an
AllowedNativeCoinERC20Token
* tests basic queries and permissions of deployed contract
* update changelog
* improve error messages & comments for erc20 deploy
